20138521011

Names of 20138521011

• Cardinal: 20138521011 can be written as Twenty billion, one hundred thirty-eight million, five hundred twenty-one thousand and eleven.

Scientific notation

• Scientific notation: 2.0138521011 × 10¹⁰

Factors of 20138521011

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 27524

Divisors of 20138521011

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 17 21 29 51 71 87 119 203 213 357 493 497 609 1207 1479 1491 2059 3451 3621 6177 8449 10353 14413 25347 27397 35003 43239 82191 105009 191779 245021 465749 575337 735063 794513 1397247 1945187 2383539 3260243 5561591 5835561 9780729 13506721 13616309 16684773 33068179 40520163 40848927 56410423 94547047 99204537 169231269 231477253 283641141 394872961 694431759 958977191 1184618883 2876931573 6712840337 20138521011
• Sum of all divisors σ(n): 34087495680
• Sum of proper divisors (its aliquot sum) s(n): 13948974669
• 20138521011 is a deficient number, because the sum of its proper divisors (13948974669) is less than itself. Its deficiency is 6189546342

Bases of 20138521011

• Binary: 10010110000010110010111000110110011₂
• Hexadecimal: 0x4B05971B3
• Base-36: 991YE9F

Squares and roots of 20138521011

• 20138521011 squared (20138521011²) is 405560028510488462121
• 20138521011 cubed (20138521011³) is 8167379155380230928296836124331
• The square root of 20138521011 is 141910.2568914595
• The cube root of 20138521011 is 2720.6699353185

Scales and comparisons

• 20,138,521,011 seconds is equal to 640 years, 17 weeks, 5 days, 17 hours, 36 minutes, 51 seconds.
• To count from 1 to 20,138,521,011 would take you about one thousand, two hundred eighty years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 20138521011 cubic inches would be around 226.7 feet tall.

Recreational maths with 20138521011

• 20138521011 backwards is 11012583102
• The number of decimal digits it has is: 11
• The sum of 20138521011's digits is 24
• More coming soon!